That's not really possible - if the software was completely removed, it wouldn't be able to leave an empty disk. You can check this article for how to find out whether all components of the software have been removed.

Alternatively, it could be that another device (e.g. card reader or USB flash drive) has taken over the freed disk letter and is now displayed instead of the deleted RAM disk.

From this data, it is unclear what it relates to. I would not recommend deleting it, as could pose a risk of system instability.
Based on the supplied information, we are not sure where that volume originates from. There have been no reports of a similar problem from any RAM Disk users in the past.